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Opioid Overdose clinical trials recruiting in the U.S.

179 studies for Opioid Overdose are recruiting participants at sites across the United States.

Opioid overdose leads to slowing or stopping of breathing and sometimes death. You can take steps to help prevent an overdose, and respond to one with naloxone.

Cities with the most studies

• Baltimore, MD18 studies
• New Haven, CT17 studies
• Philadelphia, PA15 studies
• Boston, MA12 studies
• New York City, NY12 studies
• Salt Lake City, UT8 studies
• Pittsburgh, PA7 studies
• Birmingham, AL6 studies
• Providence, RI6 studies
• Ann Arbor, MI6 studies
• Charleston, SC6 studies
• San Francisco, CA6 studies
• Indianapolis, IN5 studies
• Minneapolis, MN5 studies
• Chicago, IL5 studies
• Seattle, WA4 studies
• The Bronx, NY4 studies
• Albuquerque, NM4 studies
• Columbus, OH4 studies
• Morgantown, WV4 studies
• Greenville, SC4 studies
• Washington, DC4 studies
• Portland, OR4 studies
• Edison, NJ4 studies
• Durham, NC4 studies
• Roanoke, VA3 studies
• Atlanta, GA3 studies
• Lexington, KY3 studies
• Meads, KY3 studies
• Oakland, CA3 studies
• Springfield, MA3 studies
• San Diego, CA3 studies
• Tampa, FL3 studies
• Nashville, TN3 studies
• Bridgeport, CT3 studies

By state

• Alabama6 studies
• Arizona3 studies
• California18 studies
• Colorado3 studies
• Connecticut18 studies
• District of Columbia4 studies
• Florida6 studies
• Georgia3 studies
• Illinois6 studies
• Indiana6 studies
• Kentucky4 studies
• Maryland19 studies
• Massachusetts16 studies
• Michigan8 studies
• Minnesota8 studies
• New Jersey9 studies
• New Mexico5 studies
• New York16 studies
• North Carolina6 studies
• Ohio7 studies
• Oregon6 studies
• Pennsylvania25 studies
• Rhode Island7 studies
• South Carolina10 studies
• Tennessee3 studies
• Texas4 studies
• Utah8 studies
• Virginia4 studies
• Washington5 studies
• West Virginia6 studies
• Wisconsin4 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.